Facebook Aims to Extend Its Reach Across the Web — PALO ALTO, Calif. — Facebook, the Internet's largest social network, wants to let you take your friends with you as you travel the Web. But having been burned by privacy concerns in the last year, it plans to keep close tabs on those outings.

Apple's Black Friday bestsellers — In a holiday shopping season that got off to a better start than expected, Apple (AAPL) products sold particularly well — although not as well as last year, judging from sales at Amazon, America's largest online retailer.

Power.com: A One-Stop Shop for Social Networkers — Power.com, a Web start-up from Brazil with some prominent backers, aims to become the portal through which people access their online social lives. It's up against no less than the world's biggest Internet companies.

BMW Using Microsoft Surface for Product Navigator — BMW has hosted a video on how they are implementing Microsoft Surface for product configuration. BMW is the first car manufacturer worldwide to use this product commercially. By interacting with this multi-touch surface that runs …

Only the Rich Can Afford It. Should Taxpayers Back It? — THE Tesla Roadster is an electric car that goes fast, looks sensational and excites envy. The seductive appearance, however, obscures some inconvenient truths: its all-electric technology remains woefully immature and don't-even-ask expensive.

You're Leaving a Digital Trail. What About Privacy? — HARRISON BROWN, an 18-year-old freshman majoring in mathematics at M.I.T., didn't need to do complex calculations to figure out he liked this deal: in exchange for letting researchers track his every move, he receives a free smartphone.

Google's Gatekeepers — In 2006, Thailand announced it was blocking access to YouTube for anyone with a Thai I.P address, and then identified 20 offensive videos for Google to remove as a condition of unblocking the site. — ‘If your whole game is to increase market share,’ says Lawrence Lessig …